Synthesis and luminescent property of Ce3+-doped NaSrY(BO3)2 efficient blue-emitting phosphor as luminescent thermometer

A series of Ce3+ doped NaSrY(BO3)(2) phosphors has been synthesized via a solid-state reaction. Investigations based on XRD analysis attest the formation of high-purity and well-crystallized NaSrY1-xCex(BO3)(2) (x = 0-0.12) samples. Structural analysis also revealed the insertion of Ce3+ within the host structure by substitution for the YO6 octahedron. Under 340 nm excitation, NaSrY(BO3)(2): Ce3+ phosphors exhibit a broad blue emission band centered at 420 nm with a full width at half maxima of 85 nm at room temperature. The optimized Ce3+ concentration of NaSrY(BO3)(2): Ce3+ is 3.0 mol% and the corresponding mechanism is assigned to electric multipolar interaction. With increasing temperature, the emission intensity of optimal NaSrY(BO3)(2): 0.03Ce(3+) sample decreases to 70% and 35% of room temperature intensity at 373 K and 473 K in a completely reversible manner. The emission intensity of Ce3+ ions shows a linear quenching tendency in the temperature range of 293-473 K, in which the maximum sensitivitty value was calculated to be 0.99%/K at 473 K. Temperature-dependent luminescence properties shows that prepared NaSrY(BO3)(2): Ce3+ phosphor will be potential applicable as luminescent thermometer.

Automated summary

A series of Ce3+ doped NaSrY(BO3)(2) phosphors were successfully synthesized via solid-state reaction method. The XRD analysis confirmed the formation of high-purity and well-crystallized samples of NaSrY1-xCex(BO3)(2) (x = 0-0.12). The structural analysis revealed the incorporation of Ce3+ into the host structure by substituting the YO6 octahedron. Under 340 nm excitation, the NaSrY(BO3)(2): Ce3+ phosphors exhibited a broad blue emission band centered at 420 nm at room temperature. The optimized Ce3+ concentration was found to be 3.0 mol% and the emission mechanism was attributed to electric multipolar interaction. The emission intensity of the phosphors showed a reversible decrease with increasing temperature, with a linear quenching tendency in the temperature range of 293-473 K. The prepared NaSrY(BO3)(2): Ce3+ phosphor showed potential application as a luminescent thermometer.